Swiss Cheeses, Inc. has paid annual dividends of $$1\mathrm{.}00,$ $$1\mathrm{.}04,$ $$1\mathrm{.}09,$ and $$1\mathrm{.}15$ per share over the last four years, respectively. The stock is currently selling for $$42$ a share. What is this firm's cost of equity?

Group of answer choices

$7\mathrm{.}64\%$

$7\mathrm{.}87\%$

$7\mathrm{.}45\%$

$7\mathrm{.}38\%$